what trucks would you use for this flatcar

Deuce and a half, OOOOHRA!!!

I wouldn't.  The only Army flatcars I have seen were drop- center, or well-type, and they were on six wheel Pullman trucks.

not the type of trucks I was thinking. the rail car type of truck

I need 4 cheap flatcars. I found that flatcar body but it has no trucks and not ever doing anything like this I don't know what kind of trucks fit it . I have seen ones with plastic pins ones with a pin and a c clip and then of course the mth style with a screw. but don't know when to use which kind and which fit what.

truth is I seen it on A auction site. but the price was outrageous so now I want to build my own.